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  2. Cost curve - Wikipedia

    en.wikipedia.org/wiki/Cost_curve

    The total cost curve, if non-linear, can represent increasing and diminishing marginal returns.. The short-run total cost (SRTC) and long-run total cost (LRTC) curves are increasing in the quantity of output produced because producing more output requires more labor usage in both the short and long runs, and because in the long run producing more output involves using more of the physical ...

  3. Potential flow around a circular cylinder - Wikipedia

    en.wikipedia.org/wiki/Potential_flow_around_a...

    On the surface of the cylinder, or r = R, pressure varies from a maximum of 1 (shown in the diagram in red) at the stagnation points at θ = 0 and θ = π to a minimum of −3 (shown in blue) on the sides of the cylinder, at θ = ⁠ π / 2 ⁠ and θ = ⁠ 3π / 2 ⁠. Likewise, V varies from V = 0 at the stagnation points to V = 2U on the ...

  4. Long-run cost curve - Wikipedia

    en.wikipedia.org/wiki/Long-run_cost_curve

    In economics, a cost function represents the minimum cost of producing a quantity of some good. The long-run cost curve is a cost function that models this minimum cost over time, meaning inputs are not fixed. Using the long-run cost curve, firms can scale their means of production to reduce the costs of producing the good. [1]

  5. Nose cone design - Wikipedia

    en.wikipedia.org/wiki/Nose_cone_design

    The shape can be modified at the base to smooth out this discontinuity. Both a flat-faced cylinder and a cone are members of the power series. The power series nose shape is generated by rotating the y = R(x/L) n curve about the x-axis for values of n less than 1. The factor n controls the bluntness of the shape.

  6. Morison equation - Wikipedia

    en.wikipedia.org/wiki/Morison_equation

    A is a reference area, e.g. the cross-sectional area of the body perpendicular to the flow direction, V is volume of the body. For instance for a circular cylinder of diameter D in oscillatory flow, the reference area per unit cylinder length is A = D {\displaystyle A=D} and the cylinder volume per unit cylinder length is V = 1 4 π D 2 ...

  7. Pressure coefficient - Wikipedia

    en.wikipedia.org/wiki/Pressure_coefficient

    All the three aerodynamic coefficients are integrals of the pressure coefficient curve along the chord. The coefficient of lift for a two-dimensional airfoil section with strictly horizontal surfaces can be calculated from the coefficient of pressure distribution by integration, or calculating the area between the lines on the distribution ...

  8. Cylindrical harmonics - Wikipedia

    en.wikipedia.org/wiki/Cylindrical_harmonics

    Each function () of this basis consists of the product of three functions: (;,,) = (,) (,) where (,,) are the cylindrical coordinates, and n and k constants that differentiate the members of the set. As a result of the superposition principle applied to Laplace's equation, very general solutions to Laplace's equation can be obtained by linear ...

  9. Riemann curvature tensor - Wikipedia

    en.wikipedia.org/wiki/Riemann_curvature_tensor

    The fact that this transfer can define two different arrows at the starting point gives rise to the Riemann curvature tensor. The orthogonal symbol indicates that the dot product (provided by the metric tensor) between the transmitted arrows (or the tangent arrows on the curve) is zero. The angle between the two arrows is zero when the space is ...